Trimming machine



Aug. 27, 1946. H. HACKLANDER TRIMMING MACHINE Filed July 15, 1944 7 Sheets-Sheet. 1

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ui/aw 1946. H. HACKLANDER I 2,406,602

' TRIMMING MACHINE Filed July is, 1944 7 Sheets-Sheet 2 =m q MlIllllllllllllllllllIlllhlllllllllllllm i'illllilllllll mn I Jiwqlander Aug. 27, 1946.

H. HACKLANDER TRIMMING MACHINE Filed July 15, 194

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TRIMMING MACHINE I Filed July 15, 1944 T'Sheets-Sheet 5.

Aug. 27,1946. H. HACKLANDER 2,406,602

TRIMMING MACHINE Filed July 15, 1944 7 Shets-Sheet s IIIIIIIII'l/"Ii/iililkillllll MIHI MIIHMM MM H. HACKLANDER TRIMMING MACHINE.

Filed Jul 15,- 1944 Aug.'27, 1946.

7 Shefcs-Sheet 7 Jfans Jfibalander wane gm w Patented Aug. 27, 1946 TRIMMING MACHINE Hans Hacklander, Linden, N. J assignor to The Singer Manufacturing Company,

Elizabeth,

N. J a corporation of New Jersey Application July 15, 1944, Serial No. 545,0.61

19 Claims. IV

This invention relates to cloth trimming machines, as of th kind suitable fortrimming off imperfectly seamed portions of stockings and for other purposes; and has for its primary object to provide an improved machine of this character capable of operating at high speed and so organized as to eiTect the severing or trimming of the material fed through the machine, in a highly efiicient manner and with a minimum amount of attention by the operator.

With the above and Other objects in View, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter set forth and illustrated in the accompanying drawings of a preferred embodiment of the invention, from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

In the accompanying drawings,

Fig. 1 is a front elevation of a trimming machine embodying the invention, with the outer feed-cup removed and a portion of the overhanging bracket broken away;

Fig. 2 is a side elevation with a portion of the machine frame broken away;

Fig. 3 is a vertical transverse sectional view taken through the machine-frame and illustrating the main-shaft and some of the connections actuated thereby;

Fig. 4 is a vertical longitudinal sectional view taken through the machine-frame and illustrating the trimmer-bar and feeding mechanisms;

Fig. 5 is a top plan of the machine, with the cover-plate removed and showing the belt-drive for the outer feed-cup Fig. 6 is an enlarged view in side elevation of the pivotally mounted feed-cup supporting lever for the outer feed-cup;

Fig. 7 is a horizontal sectional view taken through the machine-frame substantially 0n the line VIIV]I of Fig. 4;

Fig. 8 is an enlarged sectional view substantially on the line VIII-VIII of Fig. 7;

Fig. 9 is an enlarged sectional View of the cutter blade supporting mechanism and associated parts;

Fig. 10 is a sectional view substantially on the line X--X of Fig. 9; and

Fig. 11 is a bottom plan view of the machine with the lower cover-plate removed, showing the clutch and gear-drive for the feed-cups.

Referring in detail to the drawings, the present illustrated embodiment of the invention includes a machine-frame generally designated I and including a standard 2 and a laterally projecting overhanging bracket 3. Formed as an integral part of the standard 2 and disposed beneath the overhanging bracket 3 is an extension 4 and a supporting lug 5, the latter sustaining the inner circular oil-collecting grooves 29.

and abelt compartment I2, see Figs. 3 and 4. The

splash-lubrication compartment I I' is closed at the bottom by means of a plate I3 secured by screws I4 and sealed by a gasket I5;

Disposed in the splash-lubrication compartment II, transversely of the machine-frame, is a main-shaft I5 journaled' in bushings Il, Fig. 3, fixed in flanged sleeves I8 secured by screws IS in bosses 20 cast in the standard 2. Mounted on the opposite ends of the main-shaft I6 are balance-wheels 2| each having a belt-groove 22. Each flanged sleeve I8 is formed with an oil-port 23 in register with a slot 24 in the boss ill] and an oil inlet port 25 in the bushing I'l, whereby oil is introduced into the shaft bearing. To prevent leakage of oil, the main-shaft I6 at its opposite ends is provided with spiral grooves 26 which feed the excess oil in the shaft bearing back into the splash-lubrication compartment I I. In addition to this oil-guard, the flanged sleeve I 8 is provided with an undercut circular recess 21 entered by a reduced hub portion 28 of the balance-wheel 2|.

In the event that some oil should leak onto the balance-wheel II, this oil is collected in the grooves 29 and is thrown ofi by centrifugal force into the undercut recess 27 and is returned into the splash-lubrication compartment It by a return port 30 formed in the lower portion of the flanged sleeve I8.

The main-shaft I6, as shown in Figs. 3 and 7, is formed with a crank, in addition to having sen cured thereto an eccentric, whereby the belowdescribed connections within the compartment I I are actuated.

From Fig. 4, it will be seen that the connections actuated by the main-shaft I 6 and extending below the same dip into oil, whose normal level is shown by the line L in Fig. 4, contained in the lower portion of the standard. These connections, during the operation of the machine, splash the oil throughout the lubrication compartment I I of the machine and thereby thoroughly lubricate the mechanism contained therein. The level of the oil may be inspected from time to time, and preferably through a transparent window 3| having thereon a horizontaI line 32 indicating the correct level of the oil.

Located in the belt compartment I2. see Fig.

Formed in the reduced portion 28 are several From the above description, it will be understood that there is provided a machine-frame divided into two compartments, one of which is oil-tight and houses all the actuating mechanism operating at a high rate of speed, while the other of which is opened to the atmosphere and houses some of the actuating mechanism operating at a slower rate of speed. The primary advantage of such a construction is that the mechanism operating at high speed can be splash-lubricated, while the mechanism operating at slow speed need not be splash-lubricated,

The work is adapted to be fed, intermittently, through the machine in substantially a vertical plane, by means of the inner feed-cup 6 and the outer feed-cup l. 4, it will be seen that the inner feed-cup 6 is secured by a screw 36 upon the upper reduced end-portion of a vertical feed-shaft (Which is journaied in spaced'bushings 38 and 39 fixed in the frame-lug and the extension 4, respectively. Forming a housing for the vertical feedshaft Bl is a relatively thin stationary tube or sheath 4b of which the upper end is fixed in the lug 5 and the lower end is fixed in the extension 4. The tube to serves as a guard for preventing b the work from becoming wound uponthe feedshaft 3? as the latter is rotated and also, since the tube has a tight fit in the extension '3, the oil in the machine-frame I may rise in the tube 40 to the same level as the oil in the machineframe, thereby lubricating the lower bearing for the feed-shaft 31. The upper bearing is lubricated by hand through a centra1 bore and radial duct 42, the oil being distributed throughout thelength of the bearing by the spiral oilgroove #3 cut into the feed-shaft 31.

The feed-shaft 31 has fastened upon its lower end-portion a spur gear 44 which meshes with a second spur gear 45 secured to the lower end of a vertically disposed feed-actuating shaft 56 journaled within the splash-lubrication compartment H. The feed actuating shaft 46 is intermittently turned by a one-way clutch 4?, which may be of any suitable construction, having an actuating-arm lower end of an angle lever journaled upon a stationary fulcrum-stud 5i fixed in a lug 52 integral with the machine-frame I. The angle lever 58 is oscillated upon the fulcrum-stud 5| y pitman connection 54. Any form of adjustable eccentric may be used, but I prefer to employ the type disclosed in the U. S. Patent of P. Diehl et al. No, 814,027, issued Mar. 6, 1906. Access to the adjustable eccentric 53 may be had by removing the screw-plug in the standard 2. The provision of the adjustable eccentric permits a regulation of the extent of oscillation imparted to the actuating-arm 48 of the one-way clutch by the link 49, angle lever 50 and pitman 54. Inasmuch as the turning movement impartedto the feed-actuating shaft 46 is determined by the extent of oscillation imparted to the one-way clutch, and since the feed-actuating shaft 45 is operatively connected to the feedshaft 31 bythe spur gears 44 and 45 and to the feed-shaft 6i by the clip-belt 33, it follows that a change in the eccentricity of, the eccentric will effect a change in the degree ofturning movement imparted to the feed-cups 6 and 1.

Referring particularly to Fig.

as connected by a link 49 to the an adjustable feed-eccentric 53 through the iii ' of the feed-cups.

4 From Fig. 3, it will be observed that the fulcrum-stud 5! is threaded into the lug 52 and is held against turning by a set-screw 56. To prevent niovement of the hub of the elbow lever 50 lengthwise of the fulcrum-stud 5!, a collar 51 is secured upon the inner end of the fulcrumstud 5 1.

Referring now to Figs. 4 and 5, the feedactuating shaft 4% has secured upon its upper end a grooved belt-pulley 53 which is connected by a common form of clip-belt 33 to a second, or outer, grooved belt-pulley 59 fastened upon the upper end of a vertically depending feed-shaft 60 supporting at its lower end the outer feed-cup l. The two belt-pulleys Stand 53 are preferably constructed of a soft material, such as fiber or the like, to minimize wear and noise. The depending feed-shaft .86 is journaled in spaced bearings'provided in the opposite ends of a stationary, tubular housing or sheath 6! which is clamped at its upper end by screw 52 in the split end 63 of the pivotaliy mounted feed-cup supporting lever 34. From the above description, it will be understood that the two feed-cups 6 and 'i are intermittently rotated simultaneously to advance the material in one direction, and that the degree of movement imparted to the feedcups per turn of the main-shaft E6 is determined by the adjustable feed eccentric 53.

The trimming instrumentalities per se comprise a stationary ledger blade and a movable cutting blade to cooperate therewith in severing the material fed through the machine by the feed-cups.

The ledger blade 6 (Figs. 7 and 8) is supported on a bracket 55 secured to the lower end of feed-shaft housing 6!, being rigidly held by a clamping plate 66 and screws 61. The cutting end 58 of the ledger blade, of which end the upper edge constitutes the cutting edge, is preferably of arcuate form and the blade is so located that a portion of the cutting edge is in the plane of tangency of the feed-cups. As shown in Fig. '7, approximately the mid-point of the cutting edge is substantially directly above the tangent point As shown in Fig. 9, the arcuate cutting end of the ledger blade substantially registers with the upper peripheral edge of the outer feed-cup l.

correspondingly located adjacent the upper peripheral edge of the inner feed-cup 6 is an arcuate guide-finger $9 secured by screws to bracket H. As shown in Fig. 2, the bracket H is secured to the face of the standard 2 by screws E2. The thickness of finger 6-9 is such that its upper face is in the plane of the top face of the ledger blade 64. The convexly curved edge 69' of the finger B8 is' preferably substantially in vertical register with the work-engaging face of the feed-cup 6; said edge 69 being in part opposed to the cutting end 68 of the ledgerblade.

The movable cutting member comprises a blade :13 having a cutting edge 14 which is preferably inclined to the plane of tangency of the feedcups. Adjacentthe cutting edge M, the blade has a projecting finger 15 which extends across the plane of tangency of the, feed-cups and bears upon the ledger-blade 64. To maintain the cuttingblades in eifective cutting relation, the movable blade is yieldingly urged downwardly info pressure contact with the ledger-blade.

Slidably mounted in the upper and lower spaced arms 16 and i6 of a bifurcated bracket ll is a tubular. carrier shaft 18 which is internally threaded to receive a long clamping screw 19.

eats-see The clamping screw engages a shoe 80 which bears upon thetop of the cutting blade I3. From the underside, the latter is-supported by a plate 8| which is secured by screws 82 to the enlarged base portion 83 of carrier shaft I8. Bridging the arms 16' and I6 and secured thereto by screws 81, 853s a'guideplate 86 which is straddled by the flanges 810f a collar88 secured-by set screw 89 to carrier shaft is. The latter and" the movable blade supported thereby are" thus held against turning relatively to the bracket 11. A spring 90, acting on the topof collari88 and bearing against the underside of the; ar'm I6, serves to maintain the cutting blade I3 in contact with the ledgerblade." To this end, the'blade I3 is preferably slightly spaced vertically from the guide-finger I5.

The cutting edge T4 of the cutting blade I3 is arranged to intersect the plane containing both axes of rotation of the feed-cups and is adapted to be reciprocated in such plane for work-severing coaction with the ledger-blade. In the result, and by reason also of the above-described arrangement and location of the ledger-blade, the cutting of the material is effected substantially at the point of t'ange'ncy'of the feed-cups, at which point the material to be trimmed is most firmly held and presented to the ledger and cutting blades. The curved edge 69 of the finger 59 not only functions in helping to direct the work between the feed-cups, but said edge 59 also serves to support the work against lateral movement between the blade I3 and the upper edge of the feed-cup 6, whereby skewing of the work is obviated.

Referring now to V V by which the cutting blade is reciprocated, it will be seen that the bracket 'II is formed upon or secured to the end of a horizontally disposed reciprocatory knife-bar sLjournaled in bushings 92 and 93 fixed in the machine-frame. 'To effect a strippingof the oil from the bar 9] as it reciprocates in the housing 92, the bearing surface of the latter has an annular recess 94 cut therein, which recess at its bottom opens into an oil-return groove 95 in the bushing 92 which directs any excess oil collected in the recess Q4 back into the splash-lubrication compartment II.

vided with an upstanding guide-lug 9Bv adapted to slide in a guideway between gibs 99 secured to the bottom of the horizontal partition I9 by screws I00. The function of the guide-lug 98 is to provide means for preventing the bar 9| from turning in its bearings as the same is reciprocated. Depending from the collar 9'! is a lug IOI connected by a link I02 to the upper arm of a rocklever I03 having an elongated hub I04, see Fig. 7, journaled between collars I 05 upon a fulcrum rod I06 fixed in spaced lugs I'I formed upon the standard 2. lever I03 is a pitman I08 which is connected at its other end to a crank [09 formed in the mainshaft I6. As shown in Fig.4, the rear wall of the machine-frame is provided with a removable screw-plug III] which can be removed to permit assembly of the bar 9] in its bearings.

'To facilitate the introduction of the work between the two feed-cups, means is provided whereby the outer feed-cup 7 can be shifted away from the inner feed-cup 6. This means comprises the feed-cup supporting lever 34-which, as previously described, has clamped in its split forthe feed-shaft 60. The feed-cup supporting Figs. 3 and 4 and the means lever 34, Figs 4 and 5,- adjacent its f'orward end is formed with two spaced bearing lugs III and H2 which are apertured to receive pivot-studs H3 and H4. Pivot-stud H3 is secured by a screw H in a-supporting bracket H6 fastened by screws Ill upon the bottom wall of the belt compartment I2 and the pivot-stud I I4 is secured by screw H8 in a boss H9 cast integral with the machine-frame I. The two bearinglugs III and H2 are spaced to provide a clearance for the clip-belt 33,

' At the inner end of the'feed-cup supporting lever 34 (see Figs. 4 and 5) there is formed an offset lug I and at right angles to the main body of the supporting lever 34a stop-arm I2I adapted to be received between two adjustable stop-bars I22 and I23, which limit the extent of movement of the outer feed-cup I toward and away from the inner feed-cups. It will be observed in Fig. 4 that the upper stop-bar I22 is threaded upon the adjusting screw I24 and is guided by the second adjusting screw I25,'while the lower stop-bar I23 is threaded upon the sec ond adjusting screw I and guided by the first adjusting screw I24. By having the upper stop bar I22 adjustable, the outer feed-cup I may be initially set at various distances from the inner feed-cup 6 depending upon the thickness of'the material being trimmed. After the stop-bar I22 has been correctly set, the lower stop-bar I23 can be adjusted to limit movement of the outer feedcup in a direction away from the inner feed-cup. In order to facilitate assembly, the two adjusting screws I2 l and I25 are reduced at their lower ends and set into apertures I26 drilled in the machine-frame, the screws I24 and I25 being maintained seated in these apertures I26 by the cover-plate 8 which rests upon the flanges I21 formed upon the heads of the adjusting screws I24 and I25. 7

Referring now to Fig. 3, itwill be seen that the offset lug I20 provided at the inner end of the feed-cup supporting lever is aperture-d and dished, as at I28, to receive the semi-spherical nut I29 threaded upon the upper end of a control rod I30 connected at its lower end preferably by a chain to a knee-control or foot-treadle (not shown). The control-rod I30 extends through a tubular housing or sheath I-3I which at its lower Connected to the lower arm of the end is pressed into an aperture in an upstanding boss I32 integral with the bottom plate It and at its upper end extends through an aperture in- 1 lug I20 on the feed-cup supporting lever 3- and ward; end 63 the'sheath GI in which is J'ourn'aled..,

the lower end of the spring bearing on a washer I 34 atthe top of a tubular spacer member I35 within the housing IS. The bottom of the tubular spacer member I35 is in engagement with the top of an adjusting sleeve I36threaded into the boss I32. The adjusting sleeve I35 at its lower end is formed with a knurled head I 8! and has threaded upon its shank a locking nut I38 for securing the adjusting sleeve in any set position. From the above description, it will be understood that the coil-spring I33 yieldingly maintains the 1 a definite distance from the innerieed-cup 6, and that the tension of the coil-spring i 33 can be regulated by the adjusting sleeve I36.

When the machine illustrated is used for certain operations, such as trimming hosiery or other material the edges of which have a pronounced tendency to curl, it is desirable to employ a so-v called uncurling guide which flattens the edges of the material and presents them to the cutting mechanism in distended form appropriate for trimming. 7

One form of uncurling guide, generally designated I39, is shown in Figs. 1 and 2. It is mounted on a bracket I40 secured to the machine frame by a screw MI and includes'a central guiding plate I42 terminating at its upper end in a supporting shank M3. Disposed on opposite sides of the guiding plate 32 are uncurlers I44 and M yieldingly pressed against the faces of the guiding plate, as by springs M6. The construction of uncurlers of this general character is well known, and since the details of the uncurler illustrated form no part of the present invention, no further description is necessary.

However, it will be recognized that by reason of the above-described arrangement of the ledger and cutting blades, whereby the trimming takes place substantially at the point of tangency of the feed-cups, the uncurling guide, of whatever particular construction, can be mounted extremely close to such point of tangency, thereby further contributing to the effectiveness of the machine, particularly at high speed. As appears in Fig. 7, the uncurling guide is mounted between the feed cups adjacent and immediately in advance of the trimming blades.

Having thus set forth the nature of the invention, what I claim herein is:

1. In a trimming machine, including opposed rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with a portion'of its cutting edge substantially in the plane of tangency of the feed-cups, and a movable cutting blade to cooperate with the ledger blade in trimming the material fed by said cups, said cutting blade having its cutting edge located to cross the cutting edge of the ledger blade at a point lying substantially in the plane of the axes of rotation of the feed-cups.

2. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a cutting blade adapted to cooperate with the ledger blade in trimming material fed by said cups, and means to reciprocate the cutting blade, said cutting blade having its cutting edge so located with reference to its path of reciprocation as to coact with the cutting edge of the ledger blade at a point lying substantially in the plane of the axes of rotation of the feed-cups.

3. In a trimming machine, including a pair of feed-cups disposed for rotation about vertical axes and adapted to grip and feed the material to be trimmed, the combination therewith of a ledger blade mounted above and adjacent one of the feed-cups with a portion of its cutting edge substantially overlying the point of tangency of the feed-cups, and a movable cutting blade to cooperate with the ledger blade, said movable cutting blade being mounted above and adjacent theother feed-cup with its cutting edge located to cross the cutting edge of the ledger blade also at a point substantially overlying the point of tangency of the feed-cups. V r

4. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade, having an arcuate cutting edge overlying and substantially registering with a peripheral edge of one of the feed-cups at the point of tangenc of such cup with its adjacent cup, and a movable cutting blade to cooperate with the ledger blade in trimming the material fed by said cups, said cutting blade having its cutting edge located to cross the cutting edge of the ledger blade at a point lying substantially in the plane of the axes of rotation f the feed-cups.

5. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with its cutting edge disposed transversely of the axes of rotation of said feed-cups and having a portion of its cutting edge substantially in the plane of tangency of the feed-cups, and a movable cutting blade, said cutting blade having supporting means extending across the said plane of tangency of the feed-cups,

6. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with its cutting edge disposed transversely of the axes of rotation of said feed-cups and having a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a movable cutting blade to cooperate with the ledger blade in trimming the material fed by said cups, and means adapted to support the cutting blade on the ledger blade throughout the entire movement of the cutting blade. 7

I '7. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with its cutting edge disposed transversely of the axes of rotation of said feed-cups and having a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a movable cutting blade to cooperate with the ledger blade in trimming the material fed by said cups, and means for supporting the cutting blade on both sides of the plane of tangency of the said feedcups.

8. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with its cutting edge disposed transversely of the axes of rotation of said feed-cups and having a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a movable cutting blade to cooperate'with the ledger blade in trimming the material fed by said cups, and means for supporting the cutting blade immediately adjacent the cutting edge'of the ledger blade and on both sides of the plane of tangency of the said feed-cups. j

V 9. Ina trimming machine, including a pair 01 9 rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a movable cutting blade to cooperate with the ledger blade in trimming the material-fed by said cups, and means for resiliently supporting the cutting blade on the ledger blade.

10. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a cutting blade to cooperate with the ledger blade in trimming the material fed by the cups, and means to reciprocate thecutting blade in the plane of the axes of rotation of the feed-cups.

11. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge substantially in the mounted adjacent one of the feed-cups with a portion of its cutting edge substantially in the ;plane of tangency of the feed-cups, a cutting blade to cooperate with the ledger blade in trimming the material fed by the cups, the cutting blade having its cutting edge located to intersect the plane of the axes of rotation of the feed-cups, and means to reciprocate the'cutting blade in such plane. p

13. In a trimming machine, including a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted with a portion of its cutting edge substantially in the plane of tangency of the feedcups and substantially coincident with a peripheral edge portion of one of such cups, a guidemember mounted adjacent the other of such cups with a surface substantially alined with a surface of the ledger blade, and a movable cutting blade to cooperate with the ledger blade, said cutting blade having a supporting portion adapted to ride on said surface of the ledger blade throughout the entire movement of the cutting blade.

14. In a trimming machine, including a pair of rotary feed-cups'adapted to grip and feed the material to be trimmed, the improvement which comprises the combination of a ledger blade mounted with a portion of its cutting edge substantially in the plane of tangency of the feedsurface substantially alined with a surface of the ledger blade, and a movable cutting blade to cooperate with the ledger blade, said cutting blade being resiliently supported on one of said surfaces.

15. In a trimming machine a frame including a standard and an overhanging bracket, a pair of feed-cups mounted to rotate in a horizontal plane beneath said bracket, a drive shaft for one of the feed-cups and a stationary housing for said shaft depending from said bracket, a reciprocatory knife-bar mounted in the standard, a ledger blade mounted on said 'drive shaft housing, and a cooperating cutting blade mounted on said reciprocatory knife-bar 16. In a trimming machine a frame including a siandard and an overhanging bracket, a pair of feed-cups mounted to rotate in a horizontal plane beneath said bracket, a drive shaft for one of the feed-cups and a stationary housing for said shaft depending from said bracket, a ledger blade mounted on said drive shaft housing with a portion of its cutting edge substantially in the plane of tangency of the feed-cups, a cooperating cutting blade, and means disposed in the standard for reciprocating the cutting blade in the plane of the axes of rotation of the feed-cups.

17. In a trimming machine, the combination with a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge located substantially at a point of intersection of the plane of rotation of the axes of the feed-cups with the plane of tangency of the feed-cups, and a movable cutting blade to cooperate with the ledger blade, the cutting edge of said cutting blade having a path of movement to sever the material substantially at the said point of intersection.

18. In a trimming machine, the combinatio with a pair of rotary feed-cups adapted to grip and feed the material to be trimmed, a ledger blade mounted adjacent one of the feed-cups with a portion of its cutting edge located substantially at a point of intersection of the plane of rotation of the axes of the feed-cups with the plane of tangency of the feed-cups, a movable cutting blade adapted to cooperate with the ledger blade to sever the material substantially at the said point of intersection, and an uncurling guide located between the feed-cups adjacent and in advance of said blades.

19. In a trimming machine, a pair of opposed and relatively yieldable outer and inner feed-cups disposed for rotation about vertical axes, means for rotating said feed-cups, a ledger blade disposed above and in close proximity to the outer of said feed-cups, said guide-member having a fabric-guiding edge opposed to the cutting edge of said ledger blade and disposed substantially in vertical register with the work-engaging face of said inner feed-cup.

HANS HACKLANDER. 

